Abstract:

Using the sea ice data of MODIS covering the period 2000—2002 obtained from the NSIDC,this paper investigated the surrounding sea ice of Zhongshan Station to inspect the seasonal melting and freezing,and the variety of the ice surface temperature.The method of this study is:first,delaminate the sea ice data of the MODIS to two parts,one is the sea ice distributing,and the other is the sea ice temperature;then synthesize the data of sea ice distributing;and,count the sea ice extent on real time;at last,distill the surface temperature of the sea ice.The results indicate:the sea ice surrounding Zhongshan Station melts from October to February in the next year,and from then to April is the time of freezing without airproof,and from May to September is the time of airproof freezing,when the sea ice bestrews the sea area surrounding the Zhongshan Station.The minimum of sea ice in this district appears in February,and the highest and lowest temperatures of the ice surface appear in January and August respectively.These results are partly validated by the former study of Antarctic sea ice,and receive some more accurate data near Zhongshan Station.Besides,this paper validated the feasibility of using the sea ice data of MODIS to inspect the variety of Antarctic sea ice.